Practice

Linear Algebra — Matrix Operations

5 scenario-based annotation problems

Review AI-generated steps on matrix dimensions, determinants, inverses, and linear systems. Pick the label a careful annotator would assign.

Question 1 of 50%

Problem review

AI is asked to multiply A (2×3) by B (2×3). It writes: 'Both matrices are 2×3, so AB is defined and is 2×3.'

Step 1 — Dimension check: A(2×3) · B(2×3) ⇒ result 2×3

How should this step be labeled?